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Boston Weather: 44.0°F | Overcast

Weather: Tracking Winter Storms’ Precipitation

By Michael J. Ring
STAFF METEOROLOGIST -- Instead of adding to the encrusted remnants of last month’s blizzard, yesterday’s unsettled weather has subtracted from the snowcover. While a small burst of snow came at the storm’s end, warm temperatures and rain helped eat away at the remaining snowbanks.

The track of yesterday’s storm departed from that of last month’s blizzard, and as a result the dominant types of precipitation were different. Yesterday’s storm followed the south coast of New England before passing over Cape Cod. As the circulation around a center of low pressure is counterclockwise in the Northern Hemisphere, the prevailing direction of wind yesterday was easterly. This carried milder ocean air into our region, keeping temperatures warm enough to prevent frozen precipitation.

Last month’s storm passed to our southeast. As a result, the predominant wind was from the northeast, bringing much colder air into our region. Hence last month’s storm was able to support its ferocious snows, but the more inland track of yesterday’s storm brought instead a soaking rain.

Weekend Outlook

Today: A few lingering flurries in the morning, then partly cloudy in

the afternoon. High near 33°F (1°C).

Tonight: Partly cloudy, with a low near 25°F (-4°C).

Saturday: Partly cloudy and milder, with a high near 42°F (6°C).

Saturday night: Partly cloudy, with a low near 25°F (-4°C).

Sunday: Sunny, with highs near 37°F (3°C). Low near 27°F (-3°C).

Monday: Cloudy with rain showers likely by evening. High near

40°F (4°C).